Lenovo IdeaCentre Q700 - Manual (Page 40)

5
User Guide
Problem: Ripple on screen
Troubleshooting and problem resolution:
1. Check for devices located less than one meter from the computer such as
refrigerators, electric fans, electric dryers, UPSs, regulators, fluorescent lamps
or other computers that may be generating magnetic interference.
2. Move any interfering devices away from the computer.
3. If the problem persists, consult Lenovo Service.
5.2 Troubleshooting Audio Problems
Problem: No sound from integrated speakers
Troubleshooting and problem resolution:
• Adjust the Windows volume control — double-click the speaker icon in the
lower-right corner of your screen. Ensure that the volume is turned up and
that the sound is not muted. Adjust the volume, bass, and treble controls to
eliminate distortion.
• Reinstall the audio driver
• Disconnect any headphones from the headphone socket — sound from the
speakers is automatically disabled when headphones are connected to the
computer’s side-panel headphone socket.
Problem: No sound from headphones
Troubleshooting and problem resolution:
• Check the headphone cable connection — ensure that the headphone cable is
securely inserted into the headphone socket.
• Adjust the Windows volume control — click or double-click the speaker icon in
the lower-right corner of your screen. Ensure that the volume is turned up and
that the sound is not muted.
5.3 Troubleshooting Software Problems
Problem: You are unable to exit a running program normally.
Troubleshooting and problem resolution:
1. Open the Task Manager window by pressing Ctrl, Alt and Delete at the same
time.
2. Select the Application tab, select the problematic program, and then click the
End Task button.
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